Here's Hebrews explaining Christ by quoting one of my favorite verses, Jeremiah 31:33-34. Check out my previous post from Ezekiel, the New dovetailing beautifully with the Old.

Hebrews 10:15-18
And the Holy Spirit also bears witness to us; for after saying,

     “This is the covenant that I will make with them 
          after those days, declares the Lord:

Bible Gateway passage: Jeremiah 31:33-34 (ESV)

     I will put my laws on their hearts,
          and write them on their minds,”
then he adds,
     “I will remember their sins and their lawless deeds no more.”

Where there is forgiveness of these, there is no longer any offering for sin.
Bible Gateway Passage: Hebrews 10:15-18 (ESV)